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Planting Instructions for Euphorbia (cushion spurge):

Bloom Time:  Early summer Light:  Full sun to part shade
Soil:  Average to rich, well-drained Moisture:  Average, drought tolerant
Planting Depth:  1/2 to 1" deep, mulch lightly Spacing:  12 to 15" for smaller varieties, 18 to 24" for larger ones

Upon arrival:  Unpack box and check that you have everything on your packing list. Bare root Euphorbia should be somewhat dry in the bags, so if condensation has formed on the inside of the bag, open and let it air out. Plant everything within a day or two.

Soil/Location:  Plant your Euphorbia in full sun to part shade in average to rich, well-drained soil, and Euphorbia polychroma will tolerant dappled shade. Add compost or peat humus to enrich and loosen the soil if needed, but they are very adaptable to almost any soil conditions provided they are never wet. Remember to keep the soil light and airy for perennials, so cover them with loose soil and don't pack it in after planting.

Moisture:  Euphorbia do not require much moisture, even after they are actively growing. Early season plantings (April and May) and plants that have no foliage should be started on the dry side. During that time we like to water once and then we don't water again until the foliage has started to emerge, then we water only rarely if the soil is very dry. They are quite drought tolerant once established.

Spacing:  12 to 15" for smaller varieties, 18 to 24" for larger ones

Depth:  Plant with the top of the crown where the new growth points originate about 1/2 to 1" below soil level. None of the roots or crown should be showing after planting, and some sprouts can be a little deeper than others which is fine. Mulch lightly after planting.

General Instructions:  Amend your garden with compost or peat humus to enrich or loosen the soil, if needed, however Euphorbia are very adaptable to any good, loose, well-draining soil. Mix a couple teaspoons of garden food or bone meal into the planting hole if desired. Plant the roots as listed above, then water in once. They prefer a slightly dry start when they are dormant in spring and have no foliage. Once they are actively growing it is alright to give them supplemental water once a week, if needed.

Landscape Uses:  The larger euphorbias make nice additions to the back of the perennial garden or mixed in the shrub border. Smaller spurges make good additions to the border or rock gardens. I grew up with cushion spurge growing below a tall hedge row and was always amazed by the bright yellow flowers in the spring, but then by having them towards the back of the garden they make a nice green backdrop later in the season. Combine the shorter plants in the border with other spring bloomers such as iris, dianthus, pasque flower (Pulsatilla) and Heuchera. Purple spurges like Euphorbia 'Bonfire' are particulary attractive against white flowers or silvery leaved plants such as artemisia, gypsophila, Russian sage (Perovskia) and lamb's ears.

 
 
Hallson Gardens
PO Box 220
Brooklyn, MI 49230
517-592-9450

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